CVE-2026-67357 ArcadeData CVE debrief

Who should care

Users of ArcadeDB versions before 26.7.3, administrators with MCP access, and security teams responsible for monitoring and protecting against potential exploitation attempts should take immediate action to mitigate this vulnerability. This includes reviewing the official advisory and CVE record to validate the affected scope, severity, and vendor guidance. Additionally, security teams should plan vendor-supported updates or mitigations through normal change control where exposure is confirmed and review compensating controls for exposed systems while remediation is scheduled and verified. Asset inventory and monitoring of relevant systems are also crucial to detect potential exploitation attempts. Security teams should also track exceptions, retest remediated assets, and close the item only after evidence is documented. The vulnerability has a CVSS score of 7.7 and is rated HIGH, indicating a high level of severity. Therefore, it is essential to prioritize mitigation efforts and ensure that all necessary steps are taken to prevent exploitation. This may involve coordinating with vendors, implementing additional security controls, and monitoring systems for potential exploitation attempts. By taking proactive steps, organizations can reduce the risk of exploitation and minimize the potential impact of a successful attack. Furthermore, security teams should consider the operational impact of the vulnerability and prioritize mitigation efforts accordingly. This may involve working with IT teams to implement compensating controls, patching vulnerable systems, and monitoring for potential exploitation attempts. By taking a proactive and coordinated approach, organizations can effectively mitigate the vulnerability and reduce the risk of exploitation. The vulnerability affects multiple stakeholders, including operators, administrators, and security teams, who must work together to ensure that all necessary steps are taken to prevent exploitation. The vulnerability also highlights the importance of maintaining up-to-date asset inventory and ensuring that all systems are properly patched and configured to prevent exploitation. By prioritizing mitigation efforts and采取 a

Technical summary

The CVE-2026-67357 vulnerability is an information disclosure issue in the MCP get_server_settings tool of ArcadeDB versions before 26.7.3. The vulnerability allows attackers with MCP access to retrieve the arcadedb.ha.clusterToken in cleartext. This token can be used with X-ArcadeDB-Cluster-Token and X-ArcadeDB-Forwarded-User headers to impersonate root and achieve full server compromise. The vulnerability has a CVSS score of 7.7 and is rated HIGH. To mitigate this vulnerability, it is essential to restrict access to the MCP get_server_settings tool, implement compensating controls to monitor and detect potential exploitation attempts, and update to ArcadeDB version 26.7.3 or later.

Defensive priority

CVE-2026-67357 is rated HIGH with a CVSS score of 7.7; attackers with MCP access can exploit this information disclosure vulnerability to impersonate root and achieve full server compromise.

Recommended defensive actions

• Inventory and verify ArcadeDB versions, checking for versions before 26.7.3
• Restrict access to the MCP get_server_settings tool
• Implement compensating controls to monitor and detect potential exploitation attempts
• Update to ArcadeDB version 26.7.3 or later
• Monitor for and respond to potential exploitation attempts

Evidence notes

The CVE-2026-67357 record indicates that ArcadeDB versions before 26.7.3 contain an information disclosure vulnerability in the MCP get_server_settings tool. Official records show that the vulnerability leaks the arcadedb.ha.clusterToken in cleartext, allowing attackers with MCP access to retrieve the cluster token and use it to impersonate root.

Official resources